Just bought the AX68U and was surprised to see that DFS is not an option in the US, neither in auto nor manual selection mode. My old AX58U does DFS just fine. I checked both in Stock ASUS firmware and in Merlin, both times no DFS available. Am I missing something here? This seems like a big downside to this router. I am living in a townhouse and the DFS channels are the only ones that are uncrowded, so a router not supporting DFS is a big nogo for me.